merge: TurboQuant KV cache types onto upstream master (MTP built-in)

tools/llama-bench/llama-bench.cpp

@@ -493,6 +493,15 @@ static ggml_type ggml_type_from_name(const std::string & s) {
     if (s == "iq4_nl") {
         return GGML_TYPE_IQ4_NL;
     }
+    if (s == "turbo2") {
+        return GGML_TYPE_TURBO2_0;
+    }
+    if (s == "turbo3") {
+        return GGML_TYPE_TURBO3_0;
+    }
+    if (s == "turbo4") {
+        return GGML_TYPE_TURBO4_0;
+    }
 
     return GGML_TYPE_COUNT;
 }